I don't think there are any "good" people in that entire series except for probably Dina and Jesse. Maybe Mel at the end.
I did not care about Lev at all. In fact, Lev felt more like a shoehorned tokenization than an actual character. That comes from my understanding of cults. Something I started researching deeply when the Waco siege happened here in Texas. It is extremely unlikely that in a cult like the Seraphites that Lev would exist. The character of Lev is very much a modern sociopolitical statement that runs contrary to pretty much everything we know about behavior and thought manipulation as well as reinforcement in cults. Members are explicitly canalized to not think for themselves and to absolutely not question. Could a character like Lev have existed in the WLF or Fireflies? Certainly. I mean trans folk would exist in a post-apocalyptic setting since they've always existed in humanity. It's the setup for Lev that makes the character hollow and a gesture more than as an actual character. In fact, Lev doesn't really have much to say outside of his conflict with his gender identity and the cult. Which is why, in my mind, Lev is a token character meant as a statement more than as an actual part of the story. It was lame and ham-handed.
I agree with what Mel told Abby to her face, she's a piece of shit. Fucks Own (and that was one of the most cringe sex scenes I have ever seen in a game) even though she knows Mel is pregnant by Owen. You said Ellie is a psycho but Abby is no better. She consistently makes decisions that put everyone around her in actual, mortal danger. She decides to not just kill Joel but torture him and then kill him while Ellie watches. Granted, there was some torture before Ellie showed up, but non-psychos generally don't continue doing so in the presence of a child. Abby is blinded by revenge and it is her actions which cause Ellie's future actions.
I don't think Joel's choice was misguided at all. At no point did the Fireflies tell him before the operation that it would kill Ellie. It wasn't until after she had been wheeled away that he is told. Since it is clear he sees Ellie as a daughter and, he was lied to by omission by the Fireflies, I can fully understand his choice to go rescue Ellie. Hell, I would have done the same thing. Cure or not, you don't get it under false pretenses.
Ellie is too broken at the end of Part II to go after the Fireflies or Abby. After the battle on the beach with Abby, she's done. She knows she's done. There is nothing left within her to go on with. The game lightly touches on it during the brief phase of happiness she has on the farm with Dina but Ellie has absolutely terrible PTSD. Now missing two of her fingers, she also has to know she isn't combat effective. You can't manifest a will to fight when you're so broken inside and so affected by panic that it cripples you (see the scene in the barn with the sheep). I don't think Ellie herself cares about the cure at the end of the game anymore. She's just...done. I think the most likely scenario for Ellie as setup at the end of Part II is for her to do an Irish goodbye and just disappear.
So what would Abby do in a Part III? Join up with the Fireflies, go back to the same old routine of killing, scavenging, and survival? Everyone she knows is dead, largely due to her own fault. She's a story dead end at this point.
"Just take a look around you, what do you see? Pain, suffering, and misery." -Black Sabbath, Killing Yourself to Live.
“Man was born free, and he is everywhere in chains” -Jean-Jacques Rousseau
Purveyor of cute, fuzzy, pink bunny slippers.